EX. at Level 15 Devrim Kay you can purchase an upgrade worth 300 Dusklight Shards (Sounds pricey on paper), and a couple thousand Glimmer to give you a permanent buff that rewards a chance to gain Dusklight Shards on Precision Kills on the EDZ
Gives them meaning that could be neato burrito
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Same with the loot systems. Make weapons into bounties and have engrams be armor only